Electrolytic meter.



H. S. HATFIELD.

ELECTROLYTIC. METER.

131.101.1101! FILED In 9, 1911.

Patented Dec. 24, 1912.

UNITED STATES PATENT OFFICE.

, HENRY s'rari'onn ni'rrmnn, or JENA, GERMANY, assmnon 'ro rm: rnm'or sono'r'r a GENZ, or JENA, GERMANY.

- i To all whom it may concern:

, ELECTROLYTIC METER.

Specification of Letters 1atent..

- Application filed May 9, 1911. Serial No. 626,089.

Be it known that I, HENRY STAFFORD HAT- FIEID, a citizen of Great Britain, residing at Otto-Schott strasse, Jena, in the Grand Duchy of Saxe-Weimar, Germany, have invented a new and useful Electrolytic Meter, of which the following is a specification.

The invention relatesto electrolytic electricity meters, in which an electrode liquid is emplo ed and the measurement is carried out y the change in volume of a portion of such liquid being determined.

It consists in the meter being supplled with a special measuring vessel located above the container of the said portion, into which measuring vessel the said portion is transferred from the container by tilting the meter. Such a meter must have the whole vessel formed in such a manner that, on the container being emptied into the measuring vessel, none of the other electrode liquid of the meter isadded.

In the annexed drawing: Figure 1 is a vertical section through an electrolytic electricity meter constructed according to the invention. Fig. 2 is a vertical section through another form ofsuch a meter.

In the example Fig. 1 the container a of the liquid anode a is connected with a measuringvessel 6, which is-furnished with a scale 6. A solid bodyc serves as cathode: The anode liquid 05, which is deposited on thecathode from the electrolyte, (a solution of mercurous nitrate or any other suitable solution) accumulates in the container d, the lateral extension (1 of whichjhas about the same direction as the measuring vessel 12. Let it be assumed,.that the volume of the anode a was-determined, when it was still intact and there was as yet no anode liquid 61 in the container d, i. 6. before the commence'ment-of the electrolysis.- In order to again determinein the condition of the meter as shown the volume of the anode a. and in this way to ascertain its diminution'as compared with the volume originally measured, the meter is rotated in a vertical plane corresponding-with the plane of the drawing in the counter-clockwise direction, until the measuring vessel 6 has assumed a vertical position. During-this rotation the anode a flows into the measuring vessel 12, while the i anode liquid d asses into the extension d andis thereb hindered from flowing across into the ano e container a. After the volume has been read off on the scale, the meter may be turned back into the position shown,

(1 and d" .flowin back inconsequence to the places,}- in which they'are shown in the figure. o ul d it bedesired to restorethe anode to 1ts 1n1t1al volume before continuing tated in the clockwise direction, until the liquid d has been completely run off into the anode container a. If the meter be then rotated back again into the position shown, it will have returned to the condition, in which the initial measurement of the'volume was made.

In the secondexample, Fig. 2, one and the same liquid is employed an anode and cathode. '.lhe anode 6 is in a container 6, which is similar to the anode container a of Fig. 1. Of the cathode there are two separate parts: the effective part f in the cup f and the part 1, which has become inefl'ective the use of the meter, the latter should be roby overflowing from this cup and has accu- I immediately above the cup f The tube 2' is fitted with a chamber i on its upper side, the capacity of which should be no greater than that of the cup I. In order to carry out the measurement of the volume (the second measurement, counting the one made before starting the meter as the first one), the meter is rotated in the clockwise direction, until the measuring vessel h is vertical. During this rotation the cathode part f flows oil the cup f and combines with the part F. The cathode then passes through the tube 9 into the measuring vessel-h. The volumehaving been read off, the meter is rotated further in theclockwise direction, so that the contents of the measuring vessel,

runningalong the tube 5 under theo-rifice of the tube 9, fill the chamber 71 and the remainder flows into'the cathode container f. If the meter be now rotated in the counterclockwise direction, first of all the contents of the cathode container f will flow into the anode container e, whereby the anode will be made up to approximately the amount, at which the first measurement of the cathode volume took place. Thereupon the chamber 2' will empty itself through 2' (its contents again flowing along beneath the orifice of 9) into the measuring vessel h. The volume (which is to be deducted at the next measurement as the initial value) having been read off, when the measuring vessel is in the vertical position, the meter is.rotated on in a the counter-clockwise direction till it assumes the position shown, the measuring vessel emptying itself through the tube i (its contents again flowing along beneath the orifice of 9) into the cup f. The meter then commences the new working period with a cathode reduced to the part f".

I claim: I

1. In an electrolytic electricity meter an electrode liquid, a container for a portion of the liquid, a measuring vessel, a scale applied to this vessel located above the container, a communication between the container and the vessel for the transference of the said portion from the container to the- Y vessel by tilting the meter.

2. In an electrolytic 'electricit meter an anode liquid, a container for t e effective portion of the said liquid, a measuring vessel located above the container, a scale applied to this vessel, a communication between the container and the vessel for the HENRY STAFFORD HATEIELD.

Witnesses PAUL KRfiGER, Rrormnn HAHN. 

